P. Abreu et al., MEASUREMENT OF CORRELATIONS BETWEEN PIONS FROM DIFFERENT WS IN E(-)-]W+W- EVENTS()E(), Physics letters. Section B, 401(1-2), 1997, pp. 181-191
Correlations between pions from different W's in e(+)e(-) --> W+W- eve
nts are studied using data collected by the DELPHI detector at LEP run
ning at a centre-of-mass energy of 172 GeV in 1996. At the present lev
el of statistics, no enhancement of the correlation function above tha
t expected from a pair of uncorrelated W's is observed at small values
of the four-momentum difference of the pions. (C) 1997 Published by E
lsevier Science B.V.